PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8526631Nut,self-Locking,hexagon

Us Army Aviation and Missile Command · NSN 5310-00-550-0743 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-550-0743 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-550-0743. Primary manufacturer part number: 8526631.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Surface Treatment: CADMIUM OVERALL
  • Material: STEEL OVERALL
  • Nut Height: 0.108 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 40
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Nominal Thread Size: 0.112 INCHES IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-550-0743, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 22 commercial cross-references from 20 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-550-0743
Primary Part Number8526631
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerUs Army Aviation and Missile Command
StatusCANCELLED
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL OVERALL
Nut Height0.108 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch40
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nominal Thread Size0.112 INCHES IN
Thread Class3B
Temp Rating550.0 FAHRENHEIT NOMINAL DEGF
Width Across Flats0.240 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6625-00-020-010109640 INTERCHANGEABLE
Voltmeter
Simpson Electric Company, Inc.
5310-00-104-7979107B8151P1 INTERCHANGEABLE
Nut,self-Locking,hexagon
Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
2910-00-148-655520804 INTERCHANGEABLE
Blade,transfer Pump
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5985-00-150-0415 INTERCHANGEABLE
Attenuator,fixed
5920-00-172-5550LPJ15SP INTERCHANGEABLE
Fuse,cartridge
Cooper Bussmann, Llc Dba Cooper Industries
5310-00-220-66749640 INTERCHANGEABLE
Nut,plain,slotted,hexagon
Eaton Aerospace, Llc Dba Jackson South
5342-00-663-2361H1004 INTERCHANGEABLE
Mount,resilient,weapon System
Lord Corporation Dba Lord Corp
5310-00-680-9295NAS679A04 INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-680-9303NAS679A04W INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
4720-00-684-4033 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
H10-04 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
8526631 PRIMARY Us Army Aviation and Missile Command (USA)
10121486 Nimikkeistokeskus Ncb Finland (FIN)
1048637-1 PRIMARY Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA)
H10-04 Satair A/s (DNK)
H10-440 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
H10-04 PRIMARY Howmet Global Fastening Systems Inc (USA)
H10-04 Klx Aerospace Solutions II SAS (FRA)
H10-04 Bae Systems Plc (GBR)
33-38F40 PRIMARY Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
CP10-3-4-440 PRIMARY Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (USA)
H10-04 Tecnotec Sarl (FRA)
H10-04T2 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
1048637-1 Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div (USA)
96-40 PRIMARY Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA)
890735-008 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
69515-1 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
11AA1610 Thales Uk Limited Dba Thales Uk Ltd Defence Mission Systems (GBR)
H10-04 Boeing Distribution Services SAS (FRA)
MILN25027 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6625-00-020-0101INTERCHANGEABLE
VOLTMETER
09640
5310-00-104-7979INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
107B8151P1
2910-00-148-6555INTERCHANGEABLE
BLADE,TRANSFER PUMP
20804
5985-00-150-0415INTERCHANGEABLE
ATTENUATOR,FIXED
5920-00-172-5550INTERCHANGEABLE
FUSE,CARTRIDGE
LPJ15SP
5310-00-220-6674INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
9640
5342-00-663-2361INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
H1004
5310-00-680-9295INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
NAS679A04
5310-00-680-9303INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
NAS679A04W
4720-00-684-4033INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
3030-01-024-1353INTERCHANGEABLE
BELT,V
5120-01-335-0708INTERCHANGEABLE
WRENCH,SPANNER
APS351B

Frequently Asked Questions

What is NSN 5310-00-550-0743?

NSN 5310-00-550-0743 is a Nut,self-Locking,hexagon, manufactured by Us Army Aviation and Missile Command, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-550-0743?

NSN 5310-00-550-0743 has 22 cross-referenced part numbers: H10-04 (Howmet Global Fastening Systems Inc. Div Microdot Products), 8526631 (Us Army Aviation and Missile Command), 10121486 (Nimikkeistokeskus Ncb Finland), 1048637-1 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), H10-04 (Satair A/s) and 17 more.

What NSN replaces 5310-00-550-0743?

There are 12 known substitutes for 5310-00-550-0743: 6625-00-020-0101, 5310-00-104-7979, 2910-00-148-6555 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8526631?

Key specifications for 8526631: Surface Treatment: CADMIUM OVERALL; Material: STEEL OVERALL; Nut Height: 0.108 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC). 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-550-0743 still in active supply?

NSN 5310-00-550-0743 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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